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weqwewe [10]
2 years ago
5

Need help ASAP!!!! Which two ratios form a proportion?

Mathematics
2 answers:
Alika [10]2 years ago
5 0

Answer:

C

Step-by-step explanation:

Pls make me brainliest

Galina-37 [17]2 years ago
4 0

Answer:

The answer is C 1/2 and 7/14

Two equivalent ratios for a proportion

To determine whether the two ratios form a proportion, you can compare them using a common denominator

1/2 = 7/14

1x7 = 7

2x7 = 14

7/14 = 7/14

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Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

P(B|A) = \frac{P(A \cap B)}{P(A)}

In which

P(B|A) is the probability of event B happening, given that A happened.

P(A \cap B) is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Passing subject A

Event B: Passing subject B

The probability of passing subject A is 0.8.

This means that P(A) = 0.8

If you have passed subject A, the probability of passing subject B is 0.8.

This means that P(B|A) = 0.8

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This is P(A \cap B). So

P(B|A) = \frac{P(A \cap B)}{P(A)}

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0.64 = 64% probability that the student passes both subjects.

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This is:

p = P(A) + P(B) - P(A \cap B)

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0.86 = 86% probability that the student passes at least one of the two subjects

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